Ok thanks for the insight. I'm taking it to a machine/hydraulic shop and not spending more time with it. Thanks

not going to be much help on taking that rotator motor apart sir.
like i said, i always send them out.
way to risky to attempt out in the field.
if it's a cylinder? no problem, i do those all the time.
But rotator motors, wheel motors or even the center rotator coupler? Nope, won't do them myself. The cost vs benefit doesn't work if you are a field tech working for a lift company or even as an independent. You'll loose money on this doing it yourself.

The S/N is Z-30N12-13305
The model is Z30/20NRJ
Yes, it is the rotator jib.
Thanks for any help

i have a couple of questions
1-what is the complete model and serial off of the data plate? I'm assuming it is a Z30/20N RJ (this is the only model i know of that has a rotating jib).
2-when you say articulation jib cylinder are you saying the jib is a rotating jib? or are you talking about the cylinder that raises the jib?
it sounds to me like you are talking about the jib rotator since you mention dowels?
As for working on a rotator motor? I've always sent those out to a hydraulic shop to have them rebuilt/resealed, you'll at least have some sort of workman ship labor and parts warranty if they do it. If you attempt to do it yourself you're on your own.